Roof-shingle



C. E. RAHR."

ROOF SHINGLE.

APPLICATION FILED mm2?3 I9I9.

Patented May 18, 1920.

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UNITED; sTATEs PATENT OFFICE.

cHEsTErl E. u

comm, oE

nAHn, 0E EnooHLINE, MASSACHUSETTS, AssreNon To ATHE EEINTHOTE- BosToN, MASSACHUSETTS,

A C0 RPORtAZl-IONl 0F MASSACH'SETTS.

Hoor-SHINGLE.

To all wlwm itt/may concer/n:

Be it knownthat I, CHESTER E. RAHR, a citizen of the United States, residing at f Brookline in the county-of Norfolk and State of Massachusetts, have invented new and useful Improvements in Roof-Shingles, of which the following is a specication.

This invention has relation to asphalt shingles, and moreparticularly to what are known commerciallyas wide space shingles. Such shingles ordinarily are formed of roong felt impregnated with an asphaltic or bituminous composition and surfaced with crushed slate or other granular or iaky mineral material artially 'embedded in an asphalt coating. uch shingles are more or less flexible, and may be'laid with wide spaces between them'to form a roof covering ias illustrated and described in -United States Letters Patent to Calvin Russell, No. 1,145,440, dated July 6, 1915, in which case each shingle, iny bridging two adjacent shingles in the same horizontal row,. sags yor bends downwardly more or less to fill the. gap or space between them.

The present invention has for its objectV v so to form thev shingles as to insure their gles.

prevent being laid in proper relation by unskilledworkmen, and also to insure the contact-of each shingle, bridging a gap or space, with the shingle therebeneath.

On the accompanying drawing,- 1 ,Figure 1 illustrates a shingle embodying the invention. f i

Fig. 2 represents a cross section on the line 2--2 of IFig. 1.' A

Fig. `3 illustrates afportion of a roof covering consisting-of the said shingles.

.Y Fig. 4 represents' a section on the line 4-4of Fig. 3.

Fig. 5 shows one way of making thev shin- Rooing shinglesare customarily made of I absorbent paper, felt, which is flexible, and

which is saturated with any usualwaterhaving a relatively low melting p oint, but may .be otherwise made of a suitable brous-- material and a waterproof binder. A'sheet of the saturated@ felt or other lequivalent foundation, iscoated with asphalt or pitch having a melting point sufficiently high to its being unduly softened by solar heatand in the coating is-'partiallyem-V "each -shingle has side shingle to a transverse line which may,

be located about four inches morel, or less) fromv the lower edge of the shingle` .horizontal row,

jlbyV the next succeeding specificati@ of Letters Patent. Patented May-18, 1920, Application led December 27, 1919. Serial No, 347,679. .l

bedded a thik layer of flaky slate or other crushed mineral material of the desired however, such shingles are provided with marginal portions along their side` edges which are not surfaced with lthe minerai material, such uncoated portions, however, terminating at a distance from the lower. edge of the shingle, so that the lower end of the shingle isA surfaced from one side edge to the other, with a band of the mineral material, all for a purpose to be explained. Referring to the drawing,-a` shingle is illustrated as consisting of a body of felt a impregnated with a suitable pitch lor bitumen, and'having a ,coating Z2 of highermelting-point pitch or bitumen. "A portion of theV face of the shingle is surfaced with a thick layer of crushed slate -or its equivalent as indicated at c. Thshinglethus formedis flexible and may bend without injury. Such shingles to be laid between them may, for example, in full size be approximately nine inches wide by fourteen inches long, though of course, they may be Amade in various sizes. It will be observed that `marginal strips or portions d d which ,are not provided with the surfacing material. These unsurfaced strips extend from the upper edge of {Jhe or example,

and each unsurfaced strip may in such case be about one and one-half inches wide.

Thus the surfaced portion of the shingle somewhat resembles an inverted T. The width of the strips determines the extent to' which each shingle is laterally overlapped :bythe contiguous shingles o f the superimand the length of the posed horizontal row,

extent to which 'the strips determines the shingles of each Arow project below the shingles ofusaid superimposed horizontal row.

hns-the strips determine gaps or'spacesy and also the extent to which one horizontal row of shingles is overlap ed horizontal row. he inner end. and side e ges of each strip are marked by a' shoulder e formed vby the surthe width of the between the shingles of each facing material, and against which the coma plemental corners of the laterally overlappin shingles may be abutted.

Tv e shingles may beformed from a sheet as shown in Fig. 5. That is to say, when the sheet of felt 10 is being surfaced with the slate, certain portions or oblong areas as at 11, 12, may be left uncoated, and then the sheet may be slit longitudinally on the lines 13-13 and severed transversely on the lines le-1415-15, so that each shingle thus formed will have the uncoated strips CZ (Z as shown in Fig. 1. The oblong unsurfaced areas are shown as arranged in transverse rows, and extend individually longitudinally of the sheet, those intermediate lthe edges being bisected between their ends and midway between their side edges.

when the shingles are laid upon the roof,

they are arranged in horizont-al rows, and

in each row are spaced apart a distance equal to the width 'of the mineral facing on the upper end of the shingle as indicated at 20 in Fig. 3. When the second row 2l is laid, each shingle laterally overlaps the strips d of vthe shingles of the first row, and is abutted against the shoulders e e-thereof which form a rentrant right angle complemental to the corner of the i shingle. The 'third row 22 is similarly laid on the second row, with the result that, when the roof covering is finished, all of the unsurfaced areas are concealed, the

adjacent shingles of eachv row are properly` spaced, and each row of shingles overlaps the row on which it is superposed.

lVhen the shingles` have been laid with wide spaces between themas described,

with each one bridging a wide gap beY tween two shingles of the next lower row, it bends or sags' downwardly so as to make contact with 'the Shingle' immediately beneath it (i. e. the correspondingshingle of the second lower row) and closes the gap. Since each shingle laterally overlaps only the unsurfaced stripsd, the initial space, between itkand the shingle immediately beneath the gap bridged thereby, is greatly reduced, being much less than if'each shingle were entirely surfacedI with crushed slate.

While'I have described the shingle as the strips d, it is evident that substan` tially the same results maybe secured by initially 'surfacing these areas withcrushed slate, and then completely embedding the slate inA these areas so as to expose the black asphalt coating.v In each case, the exposed grit or slate is absent in these areas, and the asphalt coating is exposed. In each case, inaccuracies in laying the roofing are quickly shown by exposure of the black coating, for, when the shingles are properly laid, the black areas or strips d are entirely covered.

f If it be desired to lay the shingles with a space of, say, one-half inch between those in the same row, the strips d will'be much wider, so as toleave between them only a narrow surfaced strip extending downwardly from the upper edge of the shingle and mergingin the broad horizontal bandof surfacing material, which crosses the entire lower end of the shingle.

What I claim is z, .y

1. A flexible asphalt shingle, having a coating of asphalt and a surface layer of crushed mineral material partially embedded therein, and having, along its side edges, marginal lportions in which the. as-

phalt coating is exposed, said marginal portions terminating in a transverse line spaced from the bottom edge ofthe shingle.

' 2. A flexible asphalt shingle, having ,a coating of, asphalt and a surface layer of crushed mineral material partially em` bedded therein, and'having oblong areas extending from the upper edge thereof along its side edges to a transverse line parallel 'to and spaced from the lower edge of the the sides of the shingle..

In testimony whereof I have affixed my signature. t

CHESTER E. RAI-IP 

